Forecast Details for San Diego, CA

Your Recent Locations:  San Diego, CA  
This Afternoon: Sunny, with a high near 80. Northwest wind around 5 mph.
Tonight: Mostly clear, with a low around 57. Northwest wind around 5 mph becoming calm after midnight.
Wednesday: Sunny, with a high near 86. Calm wind becoming west around 5 mph in the afternoon.
Wednesday Night: Clear, with a low around 61. East wind around 5 mph becoming calm in the evening.
Thanksgiving Day: Sunny, with a high near 84. Calm wind becoming northwest around 5 mph in the afternoon.
Thursday Night: Mostly clear, with a low around 58.
Friday: Sunny, with a high near 79.
Friday Night: Clear, with a low around 56.
Saturday: Sunny, with a high near 76.
Saturday Night: Mostly clear, with a low around 53.
Sunday: Mostly sunny, with a high near 74.
Sunday Night: Mostly cloudy, with a low around 54.
Monday: Mostly sunny, with a high near 68.

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Current U.S. National Radar--Current

The Current National Weather Radar is shown below with a UTC Time (subtract 5 hours from UTC to get Eastern Time).

Current U.S. National Radar

National Weather Forecast--Current

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Todays National Weather Map

National Weather Forecast for Tomorrow

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Tomorrows National Weather Map

North America Water Vapor (Moisture)

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North American Water Vapor Map

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Weather Topic: What is Rain?

Home - Education - Precipitation - Rain

rain Next Topic: Sleet

Precipitation in the form of water droplets is called rain. Rain generally has a tendency to fall with less intensity over a greater period of time, and when rainfall is more severe it is usually less sustained.

Rain is the most common form of precipitation and happens with greater frequency depending on the season and regional influences. Cities have been shown to have an observable effect on rainfall, due to an effect called the urban heat island. Compared to upwind, monthly rainfall between twenty and forty miles downwind of cities is 30% greater.

Next Topic: Sleet

Weather Topic: What is Snow?

Home - Education - Precipitation - Snow

snow Next Topic: Cirrus Clouds

Snow is precipitation taking the form of ice crystals. Each ice crystal, or snowflake, has unique characteristics, but all of them grow in a hexagonal structure. Snowfall can last for sustained periods of time and result in significant buildup of snow on the ground.

On the earth's surface, snow starts out light and powdery, but as it begins to melt it tends to become more granular, producing small bits of ice which have the consistency of sand. After several cycles of melting and freezing, snow can become very dense and ice-like, commonly known as snow pack.

Next Topic: Cirrus Clouds